[General] Calculate distances between two arbitrary surfaces

MTMILLS87 · January 31, 2018, 06:45

Hello,

I am looking to compare the deflection/change in a surface relative to a reference surface and ultimately plot the contours of this. These surfaces may not have the same number of "points". I had a search of the forum but did not spot anything.

I have had success in the past using a programmable filter to interact with vtkPolyData to present a delta in radius of a surface based off a reference line. I have heard of a vtkDistancePolyDataFilter but have been unable to find an example using it that would fit my purpose or get it to work by trial and error myself. Essentially from two surface objects (reference and deformed) in my pipeline I would like to pass them to the programmable filter and then have this output an array on the deformed surface.

Has anyone any suggestions or material to look at. Or even a different approach.

I am using Paraview V 4.1.0.

Cheers!

MTMILLS87 · February 22, 2018, 13:45

Just using the vtkDistancePolyDataFilter without any fettling turned out to do what I required in the end. Not sure what I was doing before.

Cheers.

January 31, 2018, 06:45	Calculate distances between two arbitrary surfaces	#1
MTMILLS87 New Member Martin Join Date: Jan 2018 Posts: 3 Rep Power: 8	Hello, I am looking to compare the deflection/change in a surface relative to a reference surface and ultimately plot the contours of this. These surfaces may not have the same number of "points". I had a search of the forum but did not spot anything. I have had success in the past using a programmable filter to interact with vtkPolyData to present a delta in radius of a surface based off a reference line. I have heard of a vtkDistancePolyDataFilter but have been unable to find an example using it that would fit my purpose or get it to work by trial and error myself. Essentially from two surface objects (reference and deformed) in my pipeline I would like to pass them to the programmable filter and then have this output an array on the deformed surface. Has anyone any suggestions or material to look at. Or even a different approach. I am using Paraview V 4.1.0. Cheers!

February 22, 2018, 13:45	[solved]	#2
MTMILLS87 New Member Martin Join Date: Jan 2018 Posts: 3 Rep Power: 8	Just using the vtkDistancePolyDataFilter without any fettling turned out to do what I required in the end. Not sure what I was doing before. Cheers.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Calculate Cell Centre to Cell Face Distances	iamed18	OpenFOAM Programming & Development	16	May 27, 2022 04:08
Creating arbitrary surfaces in meshed domain	suh	OpenFOAM	7	August 20, 2019 14:27
How to calculate mass flow rate through arbitrary rectangle plane in paraview	manoj_nav	OpenFOAM Pre-Processing	1	March 10, 2016 03:16
Heat flux through a device	Reunion	STAR-CCM+	7	January 18, 2012 11:35
Faceted surfaces in ICEM	Chriss	Main CFD Forum	1	May 6, 2008 16:18